20687564844

素因数分解:

$2^2\times 3^2\times {\mathrm{1889}}^1\times {\mathrm{304211}}^1$

素因数の和:306110

約数の個数: 36

約数和(自身を含む): 52321421880

約数和(自身を除く): 31633857036

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 1889, 3778, 5667, 7556, 11334, 17001, 22668, 34002, 68004, 304211, 608422, 912633, 1216844, 1825266, 2737899, 3650532, 5475798, 10951596, 574654579, 1149309158, 1723963737, 2298618316, 3447927474, 5171891211, 6895854948, 10343782422, 20687564844]

約数ペア:

[(1, 20687564844), (2, 10343782422), (3, 6895854948), (4, 5171891211), (6, 3447927474), (9, 2298618316), (12, 1723963737), (18, 1149309158), (36, 574654579), (1889, 10951596), (3778, 5475798), (5667, 3650532), (7556, 2737899), (11334, 1825266), (17001, 1216844), (22668, 912633), (34002, 608422), (68004, 304211)]